11-07-2011
thanx for your reply...I'v tried su -. But it shows authentication failure when I enter the current password of the user. Can you help me to solve this problem?
Last edited by aarathy; 11-07-2011 at 07:27 AM..
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LEARN ABOUT HPUX
pam_authenticate
pam_authenticate(3) Library Functions Manual pam_authenticate(3)
NAME
pam_authenticate - perform authentication within the PAM framework
SYNOPSIS
[ flag ... ] file ... [ library ... ]
DESCRIPTION
is called to authenticate the current user. The user is usually required to enter a password or similar authentication token depending
upon the authentication service configured within the system. In the case of smart card authentication this token would be a (Personal
Identification Number). The user in question should have been specified by a prior call to or The following flags may be set in the flags
field:
Authentication service should not generate any messages
The authentication service should return
if the user has a null authentication token
APPLICATION USAGE
Refer to pam(3) for information on thread-safety of PAM interfaces.
NOTES
In the case of authentication failures due to an incorrect username or password, it is the responsibility of the application to retry and
to maintain the retry count. An authentication service module may implement an internal retry count and return an error if the module does
not want the application to retry.
If the PAM framework can not load the authentication module, then it will return This indicates a serious failure and that the application
should not attempt to retry the authentication.
For security reasons, the location of authentication failures is hidden from the user. Thus, if several authentication services are
stacked and a single service fails, requires that the user re-authenticate to all the services.
A null authentication token in the authentication database will result in successful authentication unless was specified. In such cases,
there will not be any prompting for the user to enter an authentication token.
The authentication can be done through a smart card. In this case the user plugs their smart card in the smart card reader and is required
to enter their smart card PIN.
RETURN VALUES
Upon successful completion, is returned. In addition to the error return values described in pam(3), the following values may be returned:
Authentication failure.
Can not access authentication data due to insufficient credentials.
Underlying authentication service can not retrieve authentication information.
User not known to the underlying authentication module.
An authentication service has maintained a retry count which
has been reached. No further retries should be attempted.
SEE ALSO
pam(3), pam_start(3), pam_open_session(3), pam_setcred(3).
pam_authenticate(3)